Saturday, June 21, 2014

BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, JUNE 21, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME

SPECTACULAR EARLY SUMMER WEATHER TODAY…
MOSTLY SUNNY WITH COMFORTABLE TEMPERATURES AND DRY AIR…
FIRST RIPE BLUEBERRY OBSERVED ON THE SUMMIT ON JUNE 19TH…
SUMMER SOLSTICE OCCURRED AT 6:51 A.M. EDT THIS MORNING…

After a beautiful sunrise this morning, the temperature
quickly climbed from a low of 52F to the middle 70s as
of early afternoon.  With dew points in the middle 40s
today the visibility has been excellent in the 75-80 mile
range. Small cumulus began to form this afternoon, though
the sky has remained mostly sunny. The blueberry plants
on the summit began showing some color last weekend, and
the first ripe blueberry was picked on June 19th, which
was just two days earlier than the mean date.

Today’s Observations:

7 A.M.
Weather: Scattered altocumulus, scattered cirrus, few
cirrocumulus overhead through east
Temperature: 59F; Dew Point: 44F; Wind: NW at 5 kts
Wind: Light
Sea-level pressure: 29.98 ins. Hg, rising
Visibility: 80 miles
6-hr max temp: 59F
6-hr min temp: 52F
BHO SA 1155 150 SCT 200 SCT 80 152/59/44/3205/998/ FEW CI/CC
OVHD-E WND LGT/ 8/039 50007 10059 20052

10 A.M.
Weather: Scattered cumulus, scattered altocumulus, scattered
thin cirrus, few cumulus fractus all quadrants, few dense
cirrus NE-ESE, few cirrus uncinus NE-E
Temperature: 67F; Dew Point: 44F; Wind: NNW at 10 kts,
Sea-level pressure: 29.96 ins. Hg, falling
Visibility: 80 miles
BHO SA 1455 50 SCT 150 SCT 200 –SCT 80 147/67/44/3310/996/ FEW
CUFRA WSW-NE FEW DNS CI NE-ESE FEW CI UNCINUS NE-E/ 8/135 58005

1 P.M.
Weather: Scattered cumulus, scattered altocumulus, scattered
cirrus
Temperature: 73F; Dew Point: 46F; Wind: WNW at 8 kts
Sea-level pressure: 29.91 ins. Hg, falling then more rapidly
Visibility: 75 miles
BHO SA 1755 60 SCT 150 SCT 200 SCT 75 128/73/46/2908/991/
8/131 58019 10073 20059

WEATHER SUMMARY FOR FRIDAY, JUNE 20, 2014

TEMPERATURE (DEGREES F)
MAX…..75    NORMAL…..76
MIN…..55    NORMAL…..59
MEAN….65    NORMAL…..68

DEPARTURE FROM 30-YEAR NORMAL…………………….-3
TOTAL DEPARTURE FOR THE MONTH……………………+31 [+1.4 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………0  DEPARTURE……….-2
TOTAL HEATING UNITS FOR THE MONTH…………..27  DEPARTURE………-37
TOTAL HEATING UNITS FOR THE SEASON………..6421  DEPARTURE………+55
TOTAL HEATING UNITS LAST SEASON TO DATE……5781  DIFFERENCE…. ..+640

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY…………..0   DEPARTURE……….-4
TOTAL COOLING UNITS FOR THE MONTH………….51   DEPARTURE……….-4
TOTAL COOLING UNITS FOR THE SEASON…………64   DEPARTURE………-15
TOTAL COOLING UNITS LAST SEASON TO DATE…….71   DIFFERENCE………-7

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………24  NW  AT 11:20 A.M.
ASOS…………………..28  NW  AT 10:34 A.M.
DAVIS………………….25  WNW AT 11:19 A.M. RMY 27
FASTEST MILE FOR YESTERDAY………………..19  NW  AT 10:33 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..18  NW  AT 12:03 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….17  NW  AT 12:04 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..11.3 NW
ASOS…………………..10.3
DAVIS…………………..9.4 NW [318 deg]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00  DEPARTURE……….-0.13
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….1.92  DEPARTURE……….-1.22
ASOS…………..1.87
TOTAL PRECIPITATION FOR THE YEAR……….24.26  DEPARTURE……….-1.54
ASOS………….24.39

PRELIMINARY CLIMATE SUMMARY FOR JUNE 2014 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/RMY GUST
RMY:  R.M. Young wind gust recording system
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized

6/1  72/47/60/-2/0.00/887/98              21 NNW RMY 21
6/2  81/52/67/+5//0.00/879/97             22 SSW RMY 23
6/3  81/57/69/+7/0.00/889/98              25 SSE RMY 28
6/4  64/52/58/-5/0.11/000/00              16 SE  RMY N/A
6/5  60/55/58/-5/0.91/000/00              21 NNW RMY 24
6/6  73/54/64/+1/0.00/655/72              22 WNW RMY 23
6/7  82/56/69/+5/0.00/893/98              21 W   RMY 22
6/8  84/63/74/+10/0.00/702/77             18 SW  RMY N/A
6/9  77/61/69/+5/0.13/046/05              21 WSW RMY 22
6/10 80/56/68/+3/0.10/183/20              29 ENE RMY 33
6/11 69/55/62/-3/T/439/48                 21 ENE RMY 20
6/12 70/56/63/-2/0.00/101/11              21 ESE RMY N/A
6/13 67/58/63/-2/…./000/00              25 E   RMY N/A
6/14 73/58/66/0/…./…/..               23 WNW RMY 24
6/15 78/53/66/0/0.00/…/..               25 NNW RMY 27
6/16 79/56/68/+2/0.00/…/..              23 S   RMY N/A
6/17 81/58/70/+3/T/…/..                 25 S   RMY 24  TSTM
6/18 83/65/74/+7/T/…/..                 35 W   RMY 38
6/19 81/61/71/+4/0.00/…/..              24 NW  RMY 25
6/20 75/55/65/-3/0.00/…/..              24 NW  RMY 27

6/21 morning low temp: 52F; the normal low is now 59F

DAILY RECORDS FOR JUNE 2014
None so far.

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):

RECORDS FOR JUNE 21
HIGH 94F IN 2012
LOW 42F IN 1940
PRECIP 1.40 INS 1903
PEAK GUST 51 MPH SSW IN 2000

RECORDS FOR JUNE 22
HIGH 93F IN 1921, 2012
LOW 43F IN 1940
PRECIP 1.57 INS IN 1900
PEAK GUST 74 MPH NW IN 1988

TODAY’S REPORT PREPARED BY: Mike Iacono